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Finding the Fourth Proportional to 12,240.90, 16,892.16 and 7,459.08

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Solution

The fourth proportional to 12,240.90, 16,892.16 and 7,459.08 is: 10,293.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.90 : 16,892.16 = 7,459.08 : x
  2. Step 2: Convert to fraction form
    12,240.90/16,892.16 = 7,459.08/x
  3. Step 3: Cross multiply
    12,240.90x = 16,892.16 × 7,459.08
  4. Step 4: Simplify right side
    12,240.90x = 125,999,972.81
  5. Step 5: Solve for x
    x = 125,999,972.81/12,240.90
  6. Step 6: Final answer
    x = 10,293.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.